Elizabeth Allen (born Elizabeth Ellen Gillease, January 25, 1929 — September 19, 2006) was an American theatre, television and film actress and singer whose forty-year career lasted from the mid-1950s through the mid-1990s and included scores of TV episodes as well as six theatrical features, two of which (1963's Donovan's Reef, for which she received a 2nd place Golden Laurel Award as Top New Female Personality, and 1964's Cheyenne Autumn) were directed by John Ford.

Allen is perhaps best known on TV for her role as the creepy saleslady in the first-season episode of Rod Serling's original version of The Twilight Zone, entitled "The After Hours", where actress Anne Francis (playing 'Miss Marsha White') finally realizes that she is a mannequin and that her month of freedom and living among the humans is over. Allen's saleslady character (seen by no one but Marsha) is the mannequin whose turn in the outside world is up next and has already been delayed by one full day, thus explaining her slightly peeved attitude.

Allen quietly retired from show business in 1996, after touring numerous cities throughout the world for over a decade with her 42nd Street role from Broadway. This was her last, significant acting job after appearing in the 1980s TV series Texas for two seasons.

In the late 1970s, Allen ventured into retail business as she operated a dress store in a San Fernando Valley shopping mall.[5] Entertainment columnist Dick Kleiner reported: "She found a vacant store, rented it, decorated it. She does all her own buying and delivering ... and a lot of the selling."[6] She told Kleiner that she thought it wise "for an actress to have something going for her when there is nothing doing on the acting front."[6]

She was married briefly to Baron Karl von Vietinghoff-Scheel, but they divorced and she never remarried.

Allen died from kidney disease, aged 77, in Fishkill, New York. She was predeceased by her only sibling, brother Joseph L. Gillease, and survived by her sister-in-law, Marion Gillease, her nephew and godson, Patrick J. Gillease, her niece, Erin Gillease Phelan, and two grand-nieces, Alicia Phelan and Alexandria Phelan.[7][8]

1963 Donovan's Reef as Ameilia Sarah Dedham. She developed a bond with John Ford, who directed that film and he later cast her as a beautiful (and comic) saloon lady, Guinevieve Plantagenet in Cheyenne Autumn.